A polyamide resin composition having excellent low-temperature impact resistance and surface property, a polyamide resin composition for rotational molding and a rotational molded article using the same. The polyamide resin composition includes a component (A) in an amount of a parts by weight, which is an aliphatic polyamide having a relative viscosity ηr of less than 2.6 as measured according to JIS K6920 under the conditions of 96 wt % of sulfuric acid, 1 wt % of the polymer concentration, and 25° C.; a component (B) in an amount of b parts by weight, which is a modified polyolefin having a density of 0.895 g/cm.sup.3 or less as measured according to ASTM D1505; and a component (C) in an amount of c parts by weight, which is a non-modified polyolefin having an MFR value of 3.0 to 30 g/10 min as measured in a load of 2.16 kg at 190° C., and the polyamide resin composition satisfies the following equations: 50≤c/(b+c)×100≤70, and 10≤(b+c)/(a+b+c)×100≤40.

A polyamide resin composition having excellent low-temperature impact resistance and surface property, a polyamide resin composition for rotational molding and a rotational molded article using the same. The polyamide resin composition includes a component (A) in an amount of a parts by weight, which is an aliphatic polyamide having a relative viscosity ηr of less than 2.6 as measured according to JIS K6920 under the conditions of 96 wt % of sulfuric acid, 1 wt % of the polymer concentration, and 25° C.; a component (B) in an amount of b parts by weight, which is a modified polyolefin having a density of 0.895 g/cm.sup.3 or less as measured according to ASTM D1505; and a component (C) in an amount of c parts by weight, which is a non-modified polyolefin having an MFR value of 3.0 to 30 g/10 min as measured in a load of 2.16 kg at 190° C., and the polyamide resin composition satisfies the following equations: 50≤c/(b+c)×100≤70, and 10≤(b+c)/(a+b+c)×100≤40.

This invention relates to a polymer composition comprising: (A) at least one semi-crystalline polymer, and (B) a stabilizer composition comprising: (1) at least one primary antioxidant comprising at least one phenolic antioxidant; and (2) at least one secondary antioxidant comprising at least one phosphite, and (3) at least one chain extending agent; wherein the b* value for said polymer composition is less than 10 according to the L*, a* and b* color system of the CIE (International Commission on Illumination) after being heated for at least three hours at 200° C. or 24 hours at 175° C.

This invention relates to a polymer composition comprising: (A) at least one semi-crystalline polymer, and (B) a stabilizer composition comprising: (1) at least one primary antioxidant comprising at least one phenolic antioxidant; and (2) at least one secondary antioxidant comprising at least one phosphite, and (3) at least one chain extending agent; wherein the b* value for said polymer composition is less than 10 according to the L*, a* and b* color system of the CIE (International Commission on Illumination) after being heated for at least three hours at 200° C. or 24 hours at 175° C.

This invention relates to a polymer composition comprising: (A) at least one semi-crystalline polymer, and (B) a stabilizer composition comprising: (1) at least one primary antioxidant comprising at least one phenolic antioxidant; and (2) at least one secondary antioxidant comprising at least one phosphite, and (3) at least one chain extending agent; wherein the b* value for said polymer composition is less than 10 according to the L*, a* and b* color system of the CIE (International Commission on Illumination) after being heated for at least three hours at 200° C. or 24 hours at 175° C.

A thermoplastic resin composition according to the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 5 to about 100 parts by weight of an inorganic filler; about 0.1 to about 2 parts by weight of a maleic anhydride-modified olefin-based copolymer; and about 0.1 to about 2 parts by weight of a phosphite compound represented by chemical formula 1. The thermoplastic resin composition is excellent in terms of chemical resistance, impact resistance, rigidity, physical property balance thereof, and the like.

A thermoplastic resin composition according to the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 5 to about 100 parts by weight of an inorganic filler; about 0.1 to about 2 parts by weight of a maleic anhydride-modified olefin-based copolymer; and about 0.1 to about 2 parts by weight of a phosphite compound represented by chemical formula 1. The thermoplastic resin composition is excellent in terms of chemical resistance, impact resistance, rigidity, physical property balance thereof, and the like.

A thermoplastic resin composition according to the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 5 to about 100 parts by weight of an inorganic filler; about 0.1 to about 2 parts by weight of a maleic anhydride-modified olefin-based copolymer; and about 0.1 to about 2 parts by weight of a phosphite compound represented by chemical formula 1. The thermoplastic resin composition is excellent in terms of chemical resistance, impact resistance, rigidity, physical property balance thereof, and the like.

An extrusion composition containing at least one resin selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers, and polypropylene impact copolymers. The extrusion composition also contains at least one benzoic acid salt-based nucleating agent provided in the composition at a use level of between about 0.01 and 0.15 parts by weight, in relation to 100 parts by weight of the resin and at least one co-additive selected from the group consisting of poly(ethylene glycol) and copolymers containing segments of ethylene oxide, wherein the co-additive has a number average molecular weight of about 300 or more, and wherein the use level of the co-additive is about 0.005 parts by weight or more, in relation to 100 parts by weight of the resin.

An extrusion composition containing at least one resin selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers, and polypropylene impact copolymers. The extrusion composition also contains at least one benzoic acid salt-based nucleating agent provided in the composition at a use level of between about 0.01 and 0.15 parts by weight, in relation to 100 parts by weight of the resin and at least one co-additive selected from the group consisting of poly(ethylene glycol) and copolymers containing segments of ethylene oxide, wherein the co-additive has a number average molecular weight of about 300 or more, and wherein the use level of the co-additive is about 0.005 parts by weight or more, in relation to 100 parts by weight of the resin.